🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 17.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 43.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.54 AU - 0.54 AU

Year: 260 Days

Day: 20.2 Hours

Environment

Temp: -126 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,376,185 km

• M1: 443,558 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 131.4

Radius: 8.5

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.76 AU - 0.9 AU

Year: 496 Days

Day: 12.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,376,185 km

• M1: 105,766 km (0.119 R)
• M2: 506,688 km (0.114 R)
• M3: 1,060,799 km (0.098 R)
• M4: 1,522,308 km (0.059 R)
• M5: 1,873,414 km (0.071 R)
• M6: 2,179,192 km (0.111 R)
• M7: 2,929,575 km (0.082 R)
• M8: 3,477,253 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.6

Radius: 13.8

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.95 AU - 2.61 AU

Year: 2258 Days

Day: 9.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,376,185 km

• M1: 171,738 km (0.026 R)
• M2: 642,074 km (0.095 R)
• M3: 1,114,205 km (0.072 R)
• M4: 1,610,571 km (0.097 R)
• M5: 2,957,400 km (0.056 R)
• M6: 3,398,864 km (0.105 R)
• M7: 3,987,382 km (0.078 R)
• M8: 4,491,526 km (0.091 R)
• M9: 5,828,782 km (0.103 R)
• M10: 9,003,099 km (0.112 R)
• M11: 10,038,017 km (0.101 R)
• M12: 11,575,285 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.5

Radius: 10.8

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.66 AU - 4.3 AU

Year: 4259 Days

Day: 10.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 29,376,185 km

• M1: 134,339 km (0.089 R)
• M2: 551,268 km (0.082 R)
• M3: 941,868 km (0.116 R)
• M4: 1,361,640 km (0.097 R)
• M5: 2,953,212 km (0.065 R)
• M6: 3,417,563 km (0.109 R)
• M7: 5,584,937 km (0.042 R)
• M8: 6,760,477 km (0.103 R)
• M9: 7,661,505 km (0.108 R)
• M10: 9,143,721 km (0.042 R)
• M11: 10,025,301 km (0.101 R)
• M12: 13,272,772 km (0.112 R)
• M13: 14,918,947 km (0.068 R)
• M14: 16,391,439 km (0.12 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 77.4

Radius: 4

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 8.57 AU - 8.91 AU

Year: 16950 Days

Day: 17.9 Hours

Environment

Temp: -236 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,376,185 km

• M1: 113,994 km (0.097 R)
• M2: 1,029,682 km (0.096 R)
• M3: 1,784,403 km (0.107 R)
• M4: 5,951,003 km (0.108 R)
• M5: 6,909,028 km (0.119 R)
• M6: 8,432,383 km (0.097 R)
• M7: 9,041,546 km (0.085 R)
• M8: 10,346,937 km (0.101 R)
• M9: 18,386,027 km (0.074 R)
• M10: 21,412,841 km (0.113 R)
• M11: 22,619,048 km (0.07 R)
• M12: 32,354,878 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 247

Radius: 5.7

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 8.3 AU - 10.66 AU

Year: 19148 Days

Day: 22.2 Hours

Environment

Temp: -239 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,376,185 km

• M1: 106,663 km (0.114 R)
• M2: 536,907 km (0.088 R)
• M3: 770,279 km (0.054 R)
• M4: 1,792,482 km (0.094 R)
• M5: 2,117,558 km (0.09 R)
• M6: 2,732,106 km (0.114 R)
• M7: 5,251,633 km (0.117 R)
• M8: 6,481,627 km (0.095 R)
• M9: 8,389,598 km (0.12 R)
• M10: 11,249,461 km (0.077 R)
• M11: 18,479,975 km (0.08 R)
• M12: 22,501,913 km (0.092 R)
• M13: 31,432,607 km (0.086 R)
• M14: 44,407,230 km (0.12 R)
• M15: 46,697,574 km (0.115 R)
• M16: 50,126,207 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 42.2

Radius: 4.9

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 8.58 AU - 10.5 AU

Year: 19330 Days

Day: 19.1 Hours

Environment

Temp: -224 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 29,376,185 km

• M1: 61,186 km (0.08 R)
• M2: 218,114 km (0.066 R)
• M3: 3,426,090 km (0.1 R)
• M4: 4,524,887 km (0.074 R)
• M5: 4,885,268 km (0.083 R)
• M6: 5,264,499 km (0.086 R)
• M7: 6,584,849 km (0.096 R)
• M8: 12,878,881 km (0.12 R)
• M9: 16,462,049 km (0.095 R)
• M10: 19,970,418 km (0.088 R)
• M11: 24,023,174 km (0.118 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 335 - 11,118 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit